When you double click JIF files on computer, the associated program will be launched to open the selected JIF file. But you can change it to any program at your pleasure.
a) Select a program to open JIF files on Windows
Right-click on the JIF file and go through 'Open with' > 'Choose default program'. In the pop-up windows, choose a program as the JIF file opener. If you decide to always open JIF files with the program, only check the option 'Always use the selected program to open this kind of file'.

b) Select another application to open JIF files on Mac
First Get Info about any one of JIF files by right-clicking or Command-I, and click 'Open with' arrow to choose a program to start your JIF file. Click 'Change All' button to set the selected application as the default JIF file opener app.

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